/**
 * Skill Preprocessor: processes SKILL.md body at load time.
 *
 * Three preprocessor types run in order:
 * 1. Variable substitution: ${VAR}, $ARGUMENTS, $N
 * 2. Shell commands: !`command` (parallel execution)
 * 3. Script execution: !{script: path} (parallel execution)
 *
 * Shell commands use the same shell selection logic as the Bash tool
 * (PowerShell on Windows, bash/zsh on Unix).
 *
 * References:
 *   - docs/cortex/skill-system.md
 *   - docs/cortex/cross-platform-considerations.md
 */
export interface PreprocessorConfig {
    /** Variables for ${VAR} and $N substitution. */
    variables: Record<string, string>;
    /** Context object passed to script executions. */
    scriptContext: Record<string, unknown>;
    /** Absolute path to the skill directory. */
    skillDir: string;
}
/**
 * Preprocess a SKILL.md body. Runs all three stages:
 * 1. Variable substitution
 * 2. Shell commands and scripts (in parallel)
 * 3. Assemble final content
 */
export declare function preprocessSkillBody(body: string, config: PreprocessorConfig): Promise<string>;
/**
 * Substitute ${VAR}, $ARGUMENTS, and $N references with their values.
 */
export declare function substituteVariables(body: string, variables: Record<string, string>): string;
/**
 * Execute a shell command and return stdout.
 * Uses the same shell selection as the Bash tool.
 */
export declare function executeShellCommand(command: string, cwd: string): Promise<string>;
/**
 * Execute a JavaScript script and return its output.
 * Scripts are loaded via dynamic import() and must export a default
 * async function.
 */
export declare function executeScript(scriptPath: string, extraArgsStr: string, config: PreprocessorConfig): Promise<string>;
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